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Leases (Tables)
 3 Months Ended
Nov. 30, 2015
Leases [Abstract]  
Reserve for Facility Closings and Related Lease Termination Charges

The changes in reserve for facility closings and related lease termination charges include the following (in millions):

 
November 30,
2015
August 31,
2015
Balance – beginning of period
$
446
 
$
257
 
Provision for present value of non-cancellable lease payments on closed facilities
 
70
 
 
231
 
Assumptions about future sublease income, terminations and changes in interest rates
 
(9
)
 
(6
)
Interest accretion
 
5
 
 
27
 
Liability assumed through acquisition of Alliance Boots
 
—
 
 
13
 
Cash payments, net of sublease income
 
(26
)
 
(76
)
Balance – end of period
$
486
 
$
446